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  • 1.1 Applicability Factors | Philadelphia Water Stormwater Plan Review
    Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Chapter 1 Download Section 1 1 1 1 Applicability Factors This Section contains guidance on the project factors that determine which portions of the Philadelphia Water PWD Stormwater Regulations Stormwater Regulations apply to an applicant s project PWD requires submissions for all projects in the City of Philadelphia that generate earth disturbance of 5 000 square feet or more yet not all projects will need to comply with all requirements of the Stormwater Regulations There are three main factors that determine which requirements of the Stormwater Regulations apply to a project Development Type Watershed and Earth Disturbance These three project characteristics play an important role in determining how the Stormwater Regulations discussed in Section 1 2 are applied to a project The applicant will use this Section to identify the project s development type watershed and earth disturbance area This information in conjunction with the requirement specific exemptions in Section 1 2 is necessary for determining applicability and the project s Review Path in Chapter 2 Of the three key applicability factors one earth disturbance can change during the course of design and construction If the earth disturbance threshold changes the applicant must return to Section 1 1 3 to verify whether the project s applicability determinations have changed 1 1 1 Development Type Development type plays a key role in determining if and how Post Construction Stormwater Management PCSM Requirements Section 1 2 1 will apply to a project Development is defined in the Stormwater Regulations as any human induced change to improved or unimproved real estate whether public or private Development encompasses but is not limited to New Development Redevelopment Demolition and Stormwater Retrofit It includes the entire Development Site even when the project is performed in phases The development types listed below are types that PWD recognizes and it is incumbent on the applicant to determine under which type his or her project falls The applicant is encouraged to contact PWD Stormwater Plan Review for assistance in determining the project s development type if they are uncertain or believe that their project may fall under more than one category New Development New Development is defined in the Stormwater Regulations as development on an unimproved tract of land where structures or impervious surfaces were removed before January 1 1970 Redevelopment Redevelopment is defined in the Stormwater Regulations as development on an improved tract of land that includes but is not limited to the demolition or removal of existing structures or impervious surfaces and replacement with new impervious surfaces This includes replacement of impervious surfaces that have been removed on or after January 1 1970 Demolition Demolition is defined in the Stormwater Regulations as a project that is limited to the razing or destruction whether entirely or in significant part of a building structure site or object including the removal of a building structure site or object from its site or the removal or destruction of the façade or surface Stormwater Retrofit Stormwater Retrofit is defined in the Stormwater Regulations as a project that is limited to the voluntary rehabilitation and or installation of stormwater management practices SMPs on a property to better manage stormwater runoff Often the motivation to initiate a Stormwater Retrofit project is to reduce the applicant s monthly stormwater bill In addition these projects often involve stormwater grants In most circumstances projects classified as Demoltion or Stormwater Retrofits will be exempt from PCSM Requirements regardless of size However these types of projects must still comply with the Erosion Sediment Control E S requirement The applicant is referred to Chapter 2 for more information Due to historic urbanization New Development projects are uncommon in Philadelphia and must comply with the most stringent PCSM Requirements The vast majority of development projects in Philadelphia are classified as Redevelopment projects The applicant can submit supporting documentation e g photographs past permits inspection reports etc to confirm a redevelopment classification If a Redevelopment project meets certain conditions it may be exempt from the Flood Control and Channel Protection requirements The applicant is referred to Section 1 2 for the Stormwater Regulations as well as requirement specific exemptions 1 1 2 Watershed The watershed in which a project site is located plays an important role in determining how PCSM Requirements Section 1 2 1 are applied to a project For example ongoing watershed wide Pennsylvania Stormwater Management Act Act 167 planning studies determine Flood Management Districts for controlling peak rates of runoff and watershed locations are also used to determine the applicability of the Channel Protection requirement for Redevelopment projects For this reason it is important that the applicant identify the correct watershed early in the design process Watershed Maps in Appendix D provide a basic guide as well as PWD s Find Your Watershed website but the applicant can also contact PWD to verify a site s watershed location There are seven major watersheds in Philadelphia Darby and Cobbs Creeks Delaware Direct Lower Schuylkill

    Original URL path: http://www.pwdplanreview.org/manual/chapter-1/1.1-applicability-factors (2016-04-24)
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  • 1.2 Stormwater Regulations | Philadelphia Water Stormwater Plan Review
    Management PCSM Requirements Water Quality Channel Protection Flood Control and Public Health and Safety PHS Release Rate In addition all earth disturbance activity must comply with the Erosion and Sediment Control E S requirements of the Pennsylvania Department of Environmental Protection PA DEP as specified in 25 Pa Code 102 4 The details of the Stormwater Regulations can be found within Chapter 6 Stormwater of PWD Regulations which are available at the City of Philadelphia website 1 2 1 Post Construction Stormwater Management Requirements PCSM Requirements regulate how stormwater runoff leaves a project site in the built or post development condition PCSM Requirements have four components Water Quality Channel Protection Flood Control and PHS Release Rate requirements All projects in the City of Philadelphia that generate earth disturbance of 15 000 square feet or more or 5 000 square feet in the Darby and Cobbs Creeks Watershed are subject to the PCSM Requirements and will follow the Development Compliance Review Path The applicant is referred to Section 2 1 2 for an explanation of and further guidance regarding Review Paths Water Quality Background The objectives of the Water Quality requirement are as follows Reduce pollution in runoff Recharge the groundwater table and increase stream base flows Restore more natural site hydrology and Reduce combined sewer overflows CSOs from the City s combined sewer systems The Water Quality requirement focuses on the removal of pollutants from stormwater runoff and is similar to requirements in surrounding states and other major cities across the country Water quality benefits are provided in part by slowing water down and allowing suspended solids to settle Because some nutrients metals organics and other contaminants are bound to these sediment particles this basic treatment mechanism can have multiple benefits Generally the physical chemical and biological processes that take place in a system that incorporates soil water and plants provide the best water quality improvements Infiltration of stormwater runoff can significantly reduce pollutant loads reaching surface water and generally does not pose a threat to groundwater quality if there is sufficient separation from the water table Infiltrating stormwater runoff also has a direct impact on reducing the quantity of water in the sewer system that can contribute to CSOs and pollution of receiving waters As such infiltration is a major focus of the Water Quality requirement Attenuation of stormwater flows also contributes to water quality goals In combined sewer systems CSOs must be reduced by maintenance of a slow release rate set to match the area weighted wet weather treatment rate of PWD s Water Pollution Control Plants Therefore when infiltration is not feasible water quality improvement in combined sewer areas must be achieved not only by reducing runoff pollutant load concentrations but also by managing the quantity and timing of stormwater discharge Detention and slow release reduces peak flows in the combined sewer during wet weather events thus reducing the frequency and magnitude of CSOs Requirement The Water Quality requirement stipulates infiltration of the first 1 5 inches of runoff from all directly connected impervious area DCIA within the limits of earth disturbance This volume of stormwater runoff is referred to as the Water Quality Volume WQv If infiltration is feasible on the project site the Water Quality requirement must be met by infiltrating 100 of the WQv through stormwater management practices SMPs One strategy to address the Water Quality requirement is to minimize the amount of DCIA which reduces the WQv that must be treated on site DCIA can be reduced through the use of disconnected impervious cover DIC which includes green roofs porous pavement and rooftop pavement and tree disconnections which are outlined in greater detail in Section 3 2 Projects that propose to disconnect 95 or more of their post development impervious area qualify for an expedited Disconnection Green Review as described in Section 2 4 Quick Tip Property owners often find that by incorporating landscape elements to reduce their DCIA they simultaneously increase their property value and retail sales reduce crime and improve mental health and worker productivity For more information regarding the triple bottom line benefits of green stormwater management practices the applicant is encouraged to visit the National Resources Defense Council website Guidance for calculating the WQv and design requirements for DIC and SMPs can be found in Chapter 3 If infiltration is infeasible or where it can be demonstrated that infiltration would cause property or environmental damage the method of compliance with the Water Quality requirement differs based on the type of sewershed in which a project is located The applicant is referred to the sewershed maps in Appendix D to determine the type of sewershed in which their project is located These maps are approximations of sewershed boundaries The applicant must refer to their project s point of stormwater discharge when determining which requirements apply to their project If the applicant believes that infiltration is not feasible a waiver from the infiltration requirement must be submitted to PWD Stormwater Plan Review for approval The applicant is referred to Section 3 3 for guidance on determining and documenting infiltration feasibility For projects in which greater than one acre of earth is disturbed and an Infiltration Waiver Request Form is submitted due to soil or groundwater contamination PA DEP must evaluate the waiver request concurrently with PWD Non Infiltrating Projects Located in Combined Sewer Areas For all areas served by a combined sewer and for which infiltration is infeasible for all or a portion of the WQv 100 of the WQv that is not infiltrated must be routed through an acceptable pollutant reducing practice and detained in each SMP for no more than 72 hours 100 of the WQv that is not infiltrated must also be released from the site at a maximum rate of 0 05 cubic feet per second cfs per acre of associated DCIA Non Infiltrating Projects NOT Located in Combined Sewer Areas For all areas not served by a combined sewer including separate sewer areas direct discharge projects

    Original URL path: http://www.pwdplanreview.org/manual/chapter-1/1.2-stormwater-regulations (2016-04-24)
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  • 2.0 Introduction | Philadelphia Water Stormwater Plan Review
    Outlet Control Introduction 4 12 2 Orifices 4 12 3 Weirs 4 12 4 Risers 4 12 5 Underdrains 4 12 6 Level Spreaders 4 12 7 Impervious Liners 4 12 8 Micro Siphon Drain Belts 4 12 9 Low Flow Devices Back to Chapters 5 0 Introduction 5 1 Construction Inspection 5 2 Common Construction Issues 5 3 Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Chapter 2 Download Section 2 0 2 0 Introduction Chapter 2 Submission Review and Approval Procedures outlines the steps required to obtain Philadelphia Water PWD Stormwater Plan Review approvals where PWD certifies that a project complies with or is exempt from the PWD Stormwater Regulations Stormwater Regulations Before using Chapter 2 the applicant must review Chapter 1 to learn the basics of the Stormwater Regulations and understand the applicability factors that determine if the Stormwater Regulations apply to the project and if so which specific requirement s apply Using the three Stormwater Regulation applicability factors described in Section 1 1

    Original URL path: http://www.pwdplanreview.org/manual/chapter-2/2.0-introduction (2016-04-24)
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  • 2.1 Existing Resources and Site Analysis | Philadelphia Water Stormwater Plan Review
    Outlet Control Introduction 4 12 2 Orifices 4 12 3 Weirs 4 12 4 Risers 4 12 5 Underdrains 4 12 6 Level Spreaders 4 12 7 Impervious Liners 4 12 8 Micro Siphon Drain Belts 4 12 9 Low Flow Devices Back to Chapters 5 0 Introduction 5 1 Construction Inspection 5 2 Common Construction Issues 5 3 Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Chapter 2 Download Section 2 1 2 1 Existing Resources and Site Analysis Every new regulated project regardless of its Review Path begins with the submission of the Existing Resources and Site Analysis ERSA Application to Philadelphia Water PWD Stormwater Plan Review Section 2 1 describes the ERSA Application lists all ERSA Application Submission Package components and details the submission process Furthermore this section assists the applicant in determining their project s applicable Review Path which is a necessary step in the completion of an ERSA Application 2 1 1 ERSA Application The ERSA Application is the first submission for

    Original URL path: http://www.pwdplanreview.org/manual/chapter-2/2.1-existing-resources-and-site-analysis (2016-04-24)
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  • 2.2 Review Paths | Philadelphia Water Stormwater Plan Review
    2 Media Filter Components 4 9 3 Media Filter Design Standards 4 9 4 Media Filter Material Standards 4 9 5 Media Filter Construction Guidance 4 9 6 Media Filter Maintenance Guidance Back to Chapter 4 4 10 1 Pretreatment Introduction 4 10 2 Berms and Retentive Grading 4 10 3 Filter Strips 4 10 4 Forebays 4 10 5 Swales Back to Chapter 4 4 11 1 Inlet Control Introduction 4 11 2 Flow Splitters 4 11 3 Curbless Design Curb Openings 4 11 4 Energy Dissipaters 4 11 5 Inlets Back to Chapter 4 4 12 1 Outlet Control Introduction 4 12 2 Orifices 4 12 3 Weirs 4 12 4 Risers 4 12 5 Underdrains 4 12 6 Level Spreaders 4 12 7 Impervious Liners 4 12 8 Micro Siphon Drain Belts 4 12 9 Low Flow Devices Back to Chapters 5 0 Introduction 5 1 Construction Inspection 5 2 Common Construction Issues 5 3 Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Chapter 2 Download Section 2 2 2 2 Review Paths Section 2 2 describes each of the four Review Paths to demonstrate a project s compliance with or exemption from the Philadelphia Water PWD Stormwater Regulations Stormwater Regulations including the steps or Review Phases within each Review Path Each Review Path has its own individual set of requirements and criteria for approvals Once a project s Review Path is identified the applicant must follow the steps in this Section that correspond with the color coded Review Path Because some of the steps between Review Paths are identical there is some repetition in the descriptions below The applicant need only refer to the set of steps corresponding to the project s determined Review Path Each project will follow one of the four following Review Paths Development Compliance Section 2 2 1 Development Exemption Section 2 2 2 Demolition Section 2 2 3 Stormwater Retrofit Section 2 2 4 If the proposed limit of earth disturbance for the project changes at any point in the development processes the applicant must refer back to Section 2 1 2 to confirm the project s Review Path Projects may be subject to State or Federal permit requirements or other PWD requirements aside from the Stormwater Regulations It is the applicant s responsibility to determine whether their project must comply with other PWD City State or Federal permit requirements The applicant is referred to Section 2 5 Section 2 6 and Section 2 7 for more information If uncertain about how to proceed the applicant is encouraged to contact PWD Stormwater Plan Review at any point in the submission and review process 2 2 1 Development Compliance Review Path The majority of development projects reviewed by PWD Stormwater Plan Review fall into the Development Compliance Review Path and are subject to Post Construction Stormwater Management PCSM Requirements Section 1 2 1 PCSM Requirements apply to all projects that propose 15 000 square feet or more of earth disturbance 5 000 square feet or more in the Darby and Cobbs Creek Watershed as well as some projects that trigger PCSM Requirements under the Wissahickon Watershed Overlay Section 1 1 2 This Review Path includes three Review Phases as detailed in Figure 2 2 1 Figure 2 2 1 Development Compliance Review Path Flow Chart Projects in the Development Compliance Review Path must obtain both Conceptual and Post Construction Stormwater Management Plan PCSMP approvals from PWD Stormwater Plan Review Section 2 3 provides detailed submission requirements for projects in this Review Path For the Development Compliance Review Path PWD offers incentives to developers proposing the use of disconnected impervious cover DIC and green stormwater practices such as bioinfiltration bioretention basins and green roofs by providing Expedited PCSMP Reviews To determine if a project qualifies for one of PWD s Expedited PCSMP Reviews the applicant is referred to Section 2 4 The applicant must clearly state the intent to qualify for an Expedited PCSMP Review in the Conceptual Review Phase

    Original URL path: http://www.pwdplanreview.org/manual/chapter-2/2.2-review-paths (2016-04-24)
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  • 2.4 Expedited Post-Construction Stormwater Management Plan Reviews | Philadelphia Water Stormwater Plan Review
    Guidance 4 8 6 Subsurface Detention Maintenance Guidance Back to Chapter 4 4 9 1 Media Filter Introduction 4 9 2 Media Filter Components 4 9 3 Media Filter Design Standards 4 9 4 Media Filter Material Standards 4 9 5 Media Filter Construction Guidance 4 9 6 Media Filter Maintenance Guidance Back to Chapter 4 4 10 1 Pretreatment Introduction 4 10 2 Berms and Retentive Grading 4 10 3 Filter Strips 4 10 4 Forebays 4 10 5 Swales Back to Chapter 4 4 11 1 Inlet Control Introduction 4 11 2 Flow Splitters 4 11 3 Curbless Design Curb Openings 4 11 4 Energy Dissipaters 4 11 5 Inlets Back to Chapter 4 4 12 1 Outlet Control Introduction 4 12 2 Orifices 4 12 3 Weirs 4 12 4 Risers 4 12 5 Underdrains 4 12 6 Level Spreaders 4 12 7 Impervious Liners 4 12 8 Micro Siphon Drain Belts 4 12 9 Low Flow Devices Back to Chapters 5 0 Introduction 5 1 Construction Inspection 5 2 Common Construction Issues 5 3 Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F

    Original URL path: http://www.pwdplanreview.org/manual/chapter-2/2.4-expedited-pcsmp-reviews (2016-04-24)
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  • 2.5 PWD’s Development Review Process | Philadelphia Water Stormwater Plan Review
    Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Chapter 2 Download Section 2 5 2 5 PWD s Development Review Process Philadelphia Water PWD is organized into a number of different units each with various responsibilities and authority with regard to land development Many of the approvals needed from units other than PWD Stormwater Plan Review are related to water and sewer connections or instances in which PWD infrastructure is affected by a proposed development The following Section briefly introduces each PWD unit involved in the development approval process focusing on its role within the process Table 2 5 1 The applicant should keep in mind that although PWD Stormwater Plan Review coordinates with other units through the stormwater review process it is the applicant s responsibility to make sure he or she obtains all needed approvals from applicable PWD units and other City and State agencies before beginning construction Table 2 5 1 Reviews by PWD Units Based on Project Characteristics PWD Unit Project Characteristic Stormwater Plan Review Projects Control Water Transport Records Cross Connection Control Design Branch Industrial Waste Unit Green Stormwater Infrastructure Program Stormwater Billing and Incentives Triggers Stormwater Regulations X Water Service Connection X Sewer Service Connection X X Backflow Prevention X X Change to PWD Infrastructure X X Right of Way Modification or Encroachment X X X Private Cost Sewer or Water Main Extension X X X Private Cost Green Stormwater Infrastructure X Stormwater Retrofit X X X Reviews may be required Unit responsible for review will depend on funding source Not every development project must be reviewed by each unit in this Section The applicant should contact units directly for questions regarding when and if plans should be submitted to that unit for review A summary of contact information and issued permits approvals for each unit is provided in Table 2 5 2 Table 2 5 2 PWD Unit Contact Information and Issued Permits Approvals Unit Phone Issued Permits Approvals Stormwater Plan Review 215 685 6387 Conceptual Approval Post Construction Stormwater Management Plan PCSMP approval Record Drawing Compliance Projects Control 215 685 6339 215 685 6353 Act 537 Review Stamps Conceptual Stormwater Management Plans approved for Zoning Act 537 Approval Exemption Water Transport Records 215 685 6271 Information and Service 215 397 7097 Inspection of Connections 215 685 6275 GPIS help 215 685 6270 Supervisor Stamps Building Permit application on behalf of PWD Water Service Approval and Pre Permit Application Sewer Connection Approval for sewer connections greater than six inch and Pre Permit Application Meter Installation Permit Cross Connection Control 215 685 1420 Form CP100 Backflow Prevention Assembly Installation Permit Design Branch 215 685 6309 Private Cost Approval Industrial Waste Unit 215 685 6236 Significant Industrial User SIU Wastewater Discharge Permit Groundwater Discharge Permit Hauled Wastewater Discharge Permit Manhole Pumpout Permit Green Stormwater Infrastructure Program 215 685 6213 Private Cost Green Street proposals Stormwater Billing and Incentives 215 685 6070 Stormwater Credits 215 685 6244 Stormwater Appeals Stormwater credits and adjustments Stormwater Management Incentives Program SMIP grants Greened Acre Retrofit Program GARP grants Planning and Research Planning and Research is the larger PWD division that houses PWD Stormwater Plan Review and two other units important to the development review process Water and Sewer Planning and Stormwater Inspections Water and Sewer Planning is responsible for reviewing preliminary water and sewer connections to PWD infrastructure proposed on Conceptual Stormwater Management Plans PWD Stormwater Plan Review incorporates comments from Water and Sewer Planning as part of the Conceptual Review Phase as described in Section 2 3 Stormwater Inspections is responsible for the inspection of stormwater facilities during and after construction The role of Stormwater Inspections is also discussed in more detail in Chapter 5 and Chapter 6 of this Manual Projects Control Projects Control is a review and coordinating entity within PWD with a number of important roles in the development process including coordinating and processing private and public project submissions and approvals among multiple PWD units Projects Control approves changes to PWD rights of way ROWs and easements including striking shrinking and establishing new ROWs PWD Stormwater Plan Review coordinates with Projects Control in the sign off of Conceptual Stormwater Management Plans signifying PWD approval for Zoning Projects Control is also charged with ensuring that development projects in Philadelphia comply with Pennsylvania s Sewage Facility Act or PA Act 537 Act 537 as amended was enacted to address existing sewage disposal problems and to prevent future problems by requiring proper planning permitting and design of sewage disposal facilities Projects Control reviews Act 537 Sewage Facilities Planning Modules submitted for development projects and issues either approvals or exemptions On lot disposal systems septic tanks are discussed in the Act 537 Application Mailer for Public Sewers and are generally reviewed and permitted by the Philadelphia Department of Public Health Projects Control receives all Submission Packages and Stormwater Plan Review Fees on behalf of Stormwater Plan Review Water Transport Records Water Transport Records WTR is a key

    Original URL path: http://www.pwdplanreview.org/manual/chapter-2/2.5-pwds-development-review-process (2016-04-24)
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  • 2.6 PWD’s Role in Philadelphia’s Development Process | Philadelphia Water Stormwater Plan Review
    Components 4 9 3 Media Filter Design Standards 4 9 4 Media Filter Material Standards 4 9 5 Media Filter Construction Guidance 4 9 6 Media Filter Maintenance Guidance Back to Chapter 4 4 10 1 Pretreatment Introduction 4 10 2 Berms and Retentive Grading 4 10 3 Filter Strips 4 10 4 Forebays 4 10 5 Swales Back to Chapter 4 4 11 1 Inlet Control Introduction 4 11 2 Flow Splitters 4 11 3 Curbless Design Curb Openings 4 11 4 Energy Dissipaters 4 11 5 Inlets Back to Chapter 4 4 12 1 Outlet Control Introduction 4 12 2 Orifices 4 12 3 Weirs 4 12 4 Risers 4 12 5 Underdrains 4 12 6 Level Spreaders 4 12 7 Impervious Liners 4 12 8 Micro Siphon Drain Belts 4 12 9 Low Flow Devices Back to Chapters 5 0 Introduction 5 1 Construction Inspection 5 2 Common Construction Issues 5 3 Construction Documentation Back to Chapter 5 5 1 1 Coordinating Inspections with Other PWD Units 5 1 2 Preconstruction Processes 5 1 3 Construction Processes 5 1 4 Final Inspection 5 1 5 Post Construction Submissions Back to Chapter 5 5 2 1 Erosion and Sediment Related Construction Issues 5 2 2 Stormwater Management Practice Related Construction Issues Back to Chapter 5 5 3 1 Construction Certification Package 5 3 2 Record Drawings Back to Chapters 6 0 Introduction 6 1 Operations and Maintenance 6 2 Stormwater Management Practice Inspection Guidance 6 3 Stormwater Credits Program Back to Chapter 6 6 1 1 Maintenance Requirements for Property Owners 6 1 2 Operations and Maintenance Agreements Back to Chapter 6 6 2 1 PWD Inspections and Enforcement 6 2 2 Property Owner Inspections Back to Chapters Appendix Index A Glossary B Abbreviations C PWD Stormwater Regulations D Watershed Maps E Plan and Report Checklists F Design Guidance Checklists G Worksheets and Infiltration Waiver H Infiltration Testing Log I Landscape Guidance J Construction Certification Package K Record Drawing Sample Back to Appendices Table E 1 General Plan Sheet Requirements Table E 2 Existing Conditions Plan Requirements Table E 3 Conceptual Stormwater Management Plan Requirements Table E 4 Erosion and Sediment Control Plan Requirements Table E 5 Standard Erosion and Sediment Control Notes Table E 6 Standard Sequence of Construction Notes Table E 7 Post Construction Stormwater Management Plan Report Requirements Table E 8 Record Drawing Requirements Back to Appendices F 1 Stormwater Regulation Compliance F 2 Post Construction Stormwater Management Plan F 3 Erosion and Sediment Control F 4 Disconnected Impervious Cover F 5 Infiltration Testing and Soil Assessment F 6 Hydrologic Model and Calculation Methods F 7 Bioinfiltration Bioretention F 8 Porous Pavement F 9 Green Roofs F 10 Subsurface Infiltration F 11 Cisterns F 12 Blue Roofs F 13 Ponds and Wet Basins F 14 Subsurface Detention F 15 Media Filters F 16 Pretreatment F 17 Inlet Controls F 18 Outlet Controls Back to Chapters Download Full Manual 80 mb Download Chapter 2 Download Section 2 6 2 6 PWD s Role in Philadelphia s Development Process Philadelphia Water PWD approvals are only one part of the full set of approvals required for development within Philadelphia PWD approvals are often prerequisites for other approvals or permits For example the PWD Post Construction Stormwater Management Plan PCSMP approval is required before the applicant may obtain a Building Permit from the City of Philadelphia Department of Licenses and Inspections L I Less formally PWD also coordinates reviews with other City agencies to promote continuity between department reviews and expedite the applicant through the City s development review process when feasible This Section provides a brief description of the City departments with which PWD interacts and overlaps as part of the City s development review process It does not describe the full extent of each department s work but rather a perspective of their work as it relates to PWD s review Licenses and Inspections Permitting PWD works closely with L I to enforce the PWD Stormwater Regulations Stormwater Regulations through the issuance of various L I permits including Zoning and Building Permits and through active construction and maintenance inspections PWD sign off is a prerequisite approval for many types of permits issued by L I As part of the Zoning Permit review the applicant may need to present the Conceptual Stormwater Management Plan Section 2 3 However PWD does not review Conceptual Stormwater Management Plans for compliance with the Zoning Code It is the applicant s responsibility to make sure all plans submitted to PWD are code compliant A summary of required PWD approvals by L I permit type is provided in Table 2 6 1 Table 2 6 1 Summary of Required PWD Approval by L I Permit Type L I Permit Required PWD Approval Zoning Permit PWD Conceptual approval is required for projects that propose more than 15 000 square feet of earth disturbance 5 000 square feet in the Darby and Cobbs Creeks Watershed or that are subject to the Wissahickon Watershed Overlay Building Permit Foundation Only and New Construction Building Permit Application must be stamped by PWD Water Transport Records WTR The PWD Stormwater Plan Review Website contains a checklist of all prerequisite PWD approvals that must be presented to WTR in order to receive a PWD stamp on the Building Permit Application Plumbing Permit Valid PWD Water Service Permit PWD Meter Installation Permit and PWD Backflow Prevention Assembly Installation Permit as applicable Projects proposing sewer connections greater than six inches in diameter must first complete a sewer connections review with PWD WTR Enforcement PWD Stormwater Plan Review inspectors coordinate with L I inspection staff in the enforcement of development projects that are not in compliance with Stormwater Regulations or the Pennsylvania Department of Environmental Protection PA DEP Erosion and Sediment Pollution Control Program Manual 2012 or latest When deemed necessary PWD will request L I enforcement support on non compliant properties The City of Philadelphia Plumbing Code L I also administers the

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